From 07b6d0cdbbda8c917480eceaec668f09e4cf24a5 Mon Sep 17 00:00:00 2001
From: Christian Lamparter <chunkeey@gmail.com>
Date: Mon, 14 Nov 2016 23:49:22 +0100
Subject: [PATCH] mtd: nand: add Winbond manufacturer and chip

This patch adds the W25N01GV NAND to the table of
known devices. Without this patch the device gets detected:

nand: device found, Manufacturer ID: 0xef, Chip ID: 0xaa
nand: Unknown NAND 256MiB 1,8V 8-bit
nand: 256 MiB, SLC, erase size: 64 KiB, page size: 1024, OOB size : 16

Whereas the u-boot identifies it as:
spi_nand: spi_nand_flash_probe SF NAND ID 00:ef:aa:21
SF: Detected W25N01GV with page size 2 KiB, total 128 MiB

Due to the page size discrepancy, it's impossible to attach
ubi volumes on the device.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
---
 drivers/mtd/nand/nand_ids.c | 4 ++++
 include/linux/mtd/nand.h    | 1 +
 2 files changed, 5 insertions(+)

--- a/drivers/mtd/nand/nand_ids.c
+++ b/drivers/mtd/nand/nand_ids.c
@@ -52,6 +52,10 @@ struct nand_flash_dev nand_flash_ids[] =
 		{ .id = {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4} },
 		  SZ_8K, SZ_8K, SZ_2M, NAND_NEED_SCRAMBLING, 6, 640,
 		  NAND_ECC_INFO(40, SZ_1K), 4 },
+	{"W25N01GV 1G 3.3V 8-bit",
+		{ .id = {0xef, 0xaa} },
+		  SZ_2K, SZ_128, SZ_128K, NAND_NO_SUBPAGE_WRITE,
+		  2, 64, NAND_ECC_INFO(1, SZ_512) },
 
 	LEGACY_ID_NAND("NAND 4MiB 5V 8-bit",   0x6B, 4, SZ_8K, SP_OPTIONS),
 	LEGACY_ID_NAND("NAND 4MiB 3,3V 8-bit", 0xE3, 4, SZ_8K, SP_OPTIONS),
